# Question 21 correct 2 2 pts the fourth step in

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Question 21Correct!2 / 2 ptsThe fourth step in calculating a confidence interval for anindependent-samples t test is to:<br>The fourth step in calculating a confidence interval for an independent-samples ttest is to:
Question 22Correct!2 / 2 pts________ is a weighted average of the two estimates of________.<br>________ is a weighted average of the two estimates of ________.
Question 23Correct!2 / 2 ptsSkip to question text.Researchers were interested in whether relaxation training decreases the number ofheadaches a person experiences. They randomly assigned 20 participants to acontrol group or a relaxation training group and noted the change in number ofheadaches each group reported from the week before training to the week aftertraining. The dependent variable in this study is:
Question 24Correct!2 / 2 ptsSkip to question text.The owners of the SciFi channel are interested in whether watching the SciFichannel causes people to become “geeky,” and if so, whether any such effectsdepend on a person's gender. They hire you to design and carry out the appropriatestudy. You design a study in which you randomly assign an equal number of menand women to watch 0, 3, 5, or 9 hours of the SciFi channel each week for 6weeks. How would you label the ANOVA used to analyze your data?
Question 252 / 2 pts
A one-way within-groups ANOVA is also known as a ________
A one-way within-groups ANOVA is also known as a ________ ANOVA.
Question 26Correct!2 / 2 ptsChecking an independent-samples t test for the assumption ofnormality is part of step ________ of the six steps.<br>
Checking an independent-samples t test for the assumption of normality is part ofstep ________ of the six steps.
Question 27
2 / 2 ptsThe comparison distribution for an independent-samples t testis a distribution of:<br>The comparison distribution for an independent-samples t test is a distribution of:
Question 28Correct!2 / 2 ptsTo evaluate Tukey's HSD, we must consult the ________table.<br>To evaluate Tukey's HSD, we must consult the ________ table.
Question 29Correct!2 / 2 ptsA study found statistically significant results for a hypothesistested with an independent-samples t test. The author of thestudy reported her effect size for the test as 0.28. According toCohen's convention, this effect size is considered:<br>

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